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Aktuelle Fachpublikationen

Unexpected formation of a tubular architecture by optically active pure organic calixsalen

Herein, an unusual tubular formation of a supramolecular organic framework by optically active macrocyclic calixsalen is shown via single crystal X-ray diffraction. The monomers are either bound by hydrogen bonds between OH groups in the lower rim of the macrocycle to form an hourglass stru ... mehr

Unexpected formation of a tubular architecture by optically active pure organic calixsalen

Herein, an unusual tubular formation of a supramolecular organic framework by optically active macrocyclic calixsalen is shown via single crystal X-ray diffraction. The monomers are either bound by hydrogen bonds between OH groups in the lower rim of the macrocycle to form an hourglass stru ... mehr

Polydopamine thin film-assisted patterned chemical bath deposition of ZnO nanorods on arbitrary substrates

Patterned nanostructures tethered on various substrates are of essential importance for both fundamental research and practical application but often require tedious and expensive fabrication procedures. We herein report a versatile and simple strategy to grow patterned zinc oxide (ZnO) nan ... mehr

Polydopamine thin film-assisted patterned chemical bath deposition of ZnO nanorods on arbitrary substrates

Patterned nanostructures tethered on various substrates are of essential importance for both fundamental research and practical application but often require tedious and expensive fabrication procedures. We herein report a versatile and simple strategy to grow patterned zinc oxide (ZnO) nan ... mehr

Polymorphism of the quasiracemate D-2-aminobutyric acid:L-norvaline

Here we report two new crystal structures of the amino acid quasiracemate d-2-aminobutyric acid:l-norvaline, as well as the fully reversible solid-state phase transition which connects the two forms. The room temperature form II is obtained by co-crystallisation through slow evaporation fro ... mehr

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An inert 3D emulsification device for individual precipitation and concentration of amorphous drug nanoparticles

Nanosizing increases the specific surface of drug particles, leading to faster dissolution inside the organism and improving the bioavailability of poorly water-soluble drugs. A novel approach for the preparation of drug nanoparticles in water using chemically inert microfluidic emulsificat ... mehr

U-Pb Age Determination of Schorlomite Garnet by Laser Ablation Inductively Coupled Plasma Mass Spectrometry

We report the first U-Pb geochronological investigation of schorlomite garnet from carbonatite and alkaline complexes and demonstrate its applicability for U-Pb age determination using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) due to its relatively high U and T ... mehr

Correction: Towards microwave imaging of cells

Correction for ‘Towards microwave imaging of cells’ by Mehmet Kelleci et al., Lab Chip, 2018, DOI: 10.1039/c7lc01251a. mehr

Feasibility of high-resolution continuum source flame molecular absorption spectrometry for silicon determination in organic solutions via SiO molecule

In this work, for the first time, Si determination via absorption by its diatomic molecule has been proposed. The high-resolution continuum source flame molecular absorption spectrometry (HR-CS FMAS) has been applied with SiO as a target molecule, generated during aspiration of xylene solut ... mehr

3D printed high density, reversible, chip-to-chip microfluidic interconnects

Our latest developments in miniaturizing 3D printed microfluidics [Gong et al., Lab Chip, 2016, 16, 2450; Gong et al., Lab Chip, 2017, 17, 2899] offer the opportunity to fabricate highly integrated chips that measure only a few mm on a side. For such small chips, an interconnection method i ... mehr

Alle Fachpublikationen zu Analytik

Unexpected formation of a tubular architecture by optically active pure organic calixsalen

Herein, an unusual tubular formation of a supramolecular organic framework by optically active macrocyclic calixsalen is shown via single crystal X-ray diffraction. The monomers are either bound by hydrogen bonds between OH groups in the lower rim of the macrocycle to form an hourglass stru ... mehr

Unexpected formation of a tubular architecture by optically active pure organic calixsalen

Herein, an unusual tubular formation of a supramolecular organic framework by optically active macrocyclic calixsalen is shown via single crystal X-ray diffraction. The monomers are either bound by hydrogen bonds between OH groups in the lower rim of the macrocycle to form an hourglass stru ... mehr

Polydopamine thin film-assisted patterned chemical bath deposition of ZnO nanorods on arbitrary substrates

Patterned nanostructures tethered on various substrates are of essential importance for both fundamental research and practical application but often require tedious and expensive fabrication procedures. We herein report a versatile and simple strategy to grow patterned zinc oxide (ZnO) nan ... mehr

Polydopamine thin film-assisted patterned chemical bath deposition of ZnO nanorods on arbitrary substrates

Patterned nanostructures tethered on various substrates are of essential importance for both fundamental research and practical application but often require tedious and expensive fabrication procedures. We herein report a versatile and simple strategy to grow patterned zinc oxide (ZnO) nan ... mehr

Polymorphism of the quasiracemate D-2-aminobutyric acid:L-norvaline

Here we report two new crystal structures of the amino acid quasiracemate d-2-aminobutyric acid:l-norvaline, as well as the fully reversible solid-state phase transition which connects the two forms. The room temperature form II is obtained by co-crystallisation through slow evaporation fro ... mehr

Alle Fachpublikationen zu Chemie

Amyloid deposition in a mouse model humanized at the transthyretin and retinol-binding protein 4 loci

Familial amyloidotic polyneuropathy is an autosomal dominant disorder caused by a point mutation in the transthyretin (TTR) gene. The process of TTR amyloidogenesis begins with rate-limiting dissociation of the TTR tetramer. Thus, the TTR stabilizers, such as Tafamidis and Diflunisal, are n ... mehr

β-Ecdysterone protects SH-SY5Y cells against β-amyloid-induced apoptosis via c-Jun N-terminal kinase- and Akt-associated complementary pathways

Recently, the significantly higher incidence of Alzheimer’s disease (AD) in women than in men has been attributed to the loss of neuroprotective estrogen after menopause. Does phytoestrogen have the ability to protect against amyloid-β (Aβ) toxicity? The aim of this study was to evaluate hy ... mehr

SLC26A3 (DRA) prevents TNF-alpha-induced barrier dysfunction and dextran sulfate sodium-induced acute colitis

SLC26A3 encodes a Cl−/HCO3− ion transporter that is also known as downregulated in adenoma (DRA) and is involved in HCO3−/mucus formation. The role of DRA in the epithelial barrier has not been previously established. In this study, we investigated the in vivo and in vitro mechanisms of DRA ... mehr

SLC26A3 (DRA) prevents TNF-alpha-induced barrier dysfunction and dextran sulfate sodium-induced acute colitis

SLC26A3 encodes a Cl−/HCO3− ion transporter that is also known as downregulated in adenoma (DRA) and is involved in HCO3−/mucus formation. The role of DRA in the epithelial barrier has not been previously established. In this study, we investigated the in vivo and in vitro mechanisms of DRA ... mehr

Endothelial heparan sulfate deficiency reduces inflammation and fibrosis in murine diabetic nephropathy

Inflammation plays a vital role in the development of diabetic nephropathy, but the underlying regulatory mechanisms are only partially understood. Our previous studies demonstrated that, during acute inflammation, endothelial heparan sulfate (HS) contributes to the adhesion and transendoth ... mehr

Alle Fachpublikationen zu Labortechnik

CFD Simulation of Hydrodynamics Characteristics in a Tank Stirred by a Hollow Self‐Inducing Impeller

ABSTRACT Hollow self‐inducing impellers are often used in gas‐liquid stirred tanks in many industrial processes. To understand the hydrodynamics characteristics of this type of stirred tank under aerated and unaerated conditions, a computational fluid dynamics (CFD) simulation study was ... mehr

CFD Simulation of Hydrodynamics Characteristics in a Tank Stirred by a Hollow Self‐Inducing Impeller

ABSTRACT Hollow self‐inducing impellers are often used in gas‐liquid stirred tanks in many industrial processes. To understand the hydrodynamics characteristics of this type of stirred tank under aerated and unaerated conditions, a computational fluid dynamics (CFD) simulation study was ... mehr

Effect of Magnetic Field on the Ammonia‐Based CO2 Absorption Process

Abstract The performance of ammonia‐based CO2 absorption under static magnetic field conditions was discussed. The removal efficiency of CO2, CO2 load, and absorption capacities were studied using a bubble reactor system. The CO2 removal efficiencies, CO2 load, and absorption capacity u ... mehr

Reactive toughening of urea–formaldehyde resin with poly(vinyl alcohol) by formation of interpenetrating networks

A series of urea–formaldehyde/poly(vinyl alcohol) (UF/PVA) blends were prepared via in situ polymerization. During the synthesis process, intra‐ and intermolecular acetalization of PVA occurred, along with the addition and condensation reactions between urea and formaldehyde, resulting in t ... mehr

Energy and Exergy Analysis of Power Generation Systems with Chemical‐Looping Combustion of Coal

Abstract Coal direct chemical‐looping combustion (CD‐CLC) process and coal gasification chemical‐looping combustion (CG‐CLC) process are two basic approaches to the application of the CLC with coal. Based on these two approaches, two different combined cycle power generation systems with ... mehr

Alle Fachpublikationen zu Verfahrenstechnik

Exploring the hydraulic fracturing parameter space: a novel high-pressure, high-throughput reactor system for investigating subsurface chemical transformations

Hydraulic fracturing coupled with horizontal drilling (HDHF) involves the deep-well injection of a fracturing fluid composed of diverse and numerous chemical additives designed to facilitate the release and collection of natural gas from shale plays. Analyses of flowback wastewaters have re ... mehr

Can the Stockholm convention address the spectrum of chemicals currently under regulatory scrutiny? Advocating a more prominent role for modeling in POP screening assessment

Frameworks for chemical regulation are based on the science at the time they were written. Today some regulations are being applied to a much broader spectrum of chemicals than we had knowledge of when the regulations were written. This entails a risk that the regulations are being used out ... mehr

Targeting cleanups towards a more sustainable future

A tension arises between society's disposition to protect people at risk from environmental pollution, and an aversion towards the potential harmful side-effects associated with cleanup activities. Here we explore how setting different cleanup standards may influence some of the environment ... mehr

Fate of nitrogen in overlying water with biochar addition to sediment in planted ditches

Best management practice (BMP) in drainage ditch systems is of high concern due to its importance in intercepting and removing pollution. Biochar has recently become an interesting option for agricultural pollution elimination, but knowledge is still limited on the fate of nitrogen (N) in d ... mehr

Do environmental dynamics matter in fate models? Exploring scenario dynamics for a terrestrial and an aquatic system

Nowadays, there is growing interest in inserting more ecological realism into risk assessment of chemicals. On the exposure evaluation side, this can be done by studying the complexity of exposure in the ecosystem, niche partitioning, e.g. variation of the exposure scenario. Current regulat ... mehr

Alle Fachpublikationen zu Umwelttechnik
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